1125181 has 8 divisors (see below), whose sum is σ = 1165824. Its totient is φ = 1085280.

The previous prime is 1125169. The next prime is 1125193. The reversal of 1125181 is 1815211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1125169) and next prime (1125193).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125181 - 2⁷ = 1125053 is a prime.

It is a super-2 number, since 2×1125181² = 2532064565522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5796 + ... + 5986.

It is an arithmetic number, because the mean of its divisors is an integer number (145728).

2^1125181 is an apocalyptic number.

It is an amenable number.

1125181 is a deficient number, since it is larger than the sum of its proper divisors (40643).

1125181 is a wasteful number, since it uses less digits than its factorization.

1125181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371.

The product of its digits is 80, while the sum is 19.

The square root of 1125181 is about 1060.7454925664. The cubic root of 1125181 is about 104.0097685597.

The spelling of 1125181 in words is "one million, one hundred twenty-five thousand, one hundred eighty-one".